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مهندسی سازه های هیدرولیکی
حامد تقی زاده 

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تقی زاده  

 

Computational Fluid Dynamics Software

 FLOW-3D Software Overview 

 

 

برای مشاهده جزئیات به ادامه مطلب بروید. 

    

CFD Applications    

 

 


 

FLOW-3D Features List

*NEW* v9.4 features are listed in red

Meshing & Geometry:

  • Structured finite difference grid
  • Multi-Block Gridding with embedded or linked blocks
  • Fractional areas/volumes (FAVOR™) for efficient and accurate geometry definition
  • Free gridding
  • Solids Modeler
  • Import most CAD files

Flow Type Options:

  • Internal, external and free-surface flows
  • Three, two or one dimensional problems
  • Transient flows
  • Cartesian or cylindrical coordinates
  • Inviscid, viscous laminar and turbulent flows
  • Multiple scalar species
  • Non-inertial reference frames
  • Two-phase flows
  • Heat transfer with phase change
  • Saturated and unsaturated porous media

Flow Definition Options:

  • General initial conditions
  • Boundary conditions
    • Symmetry
    • Rigid walls
    • Continuative
    • Periodic
    • Specified pressure
    • Specified velocit
    • Outflow
    • Grid overlay
    • Hydrostatic
    • Restart previous simulation
    • Continuation of a simulation
    • Overlay data from a previous simulation
    • Add, delete or change model parameters

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Numerical Modeling Options:

  • Volume-of-Fluid (VOF) method for fluid interfaces--TruVOF
  • Fractional areas/volumes (FAVOR™) for efficient geometry definition
  • First, second or third order advection
  • Sharp fluid interface tracking
  • Implicit or explicit modeling options
  • Point, line relaxation and GMRES pressure solvers
  • User-defined variables, subroutines and output
  • Utilities for runtime interaction during execution

Fluid Modeling Options:

  • One incompressible fluid – confined or with free surfaces
  • Two incompressible fluids – miscible or with sharp interfaces
  • Compressible fluid – subsonic, transonic, supersonic
  • Stratified fluid
  • Acoustic phenomena
  • Mass particles with variable density or diameter

Thermal Modeling Options:

  • Temperature-dependent material properties
  • Natural convection
  • Forced convection
  • Fluid and solid conduction
  • Fluid-solid heat transfer
    • Conduction
    • Specified heat flux
    • Specified temperature
  • Heat transfer to voids from fluid/obstacles
  • Distributed energy sources/sinks in fluids or solids
  • Radiation by emissivity
  • Viscous heating

Physical Modeling Options:

  • Multi-species scour deposition & bedload transport
  • Temperature-dependent material properties
  • Cavitation
  • Phase change (liquid-vapor, liquid-solid & liquid-gas)
  • Surface tension
  • Thermocapillary effects
  • Wall adhesion
  • Wall roughness
  • Vapor & gas bubbles
  • Solidification & melting (heat-of-transformation table)
  • Mass/momentum/energy sources
  • Distributed mass/energy sources
  • Shear, density and temperature-dependent viscosity
  • Thixotropic viscosity
  • Elastic stress
  • Electric field
  • Dielectric phenomena
  • Electro-osmosis
  • Electrostatic particles
  • Electro-mechanical effects
  • Joule heating
  • Air entrainment
  • Molecular and turbulent diffusion

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Special Physical Models:

  • Tethered moving objects (springs & ropes)
  • General moving objects with 6 degrees of freedom--user specified motion or fully-coupled with rigid body motion
  • Rotating/spinning obstacles
  • Porous baffles & obstacles with linear and quadratic flow losses
  • Collision model

Metal Casting Models:

  • Core gas generation
  • Solidification shrinkage with interdendritic feeding
  • Temperature-dependent material properties
  • Solidification/melting (heat-of-transformation table)
  • Binary segregation during solidification
  • Solid-fraction dependent latent heat release
  • Thermal die cycling
  • Defect tracking
  • Cavitation potential model
  • Lost-Foam casting model
  • Semi-solid material models
  • Moisture in sand molds
  • Shot sleeves
  • Back pressure and vents
  • Sand core blowing

Turbulence Models:

  • Prandtl mixing length
  • One-equation transport
  • Two-equation k-ε transport
  • RNG (renormalized group theory)
  • Large eddy simulation

Porous Media Models:

  • Variable porosity
  • Directional porosity
  • General flow losses (linear and quadratic)
  • Capillary pressure
  • Unsaturated flow
  • Heat transfer in porous media

Two-phase and Two-component Models:

  • Liquid/liquid and gas/liquid interfaces
  • Two-fluid mixtures
  • One compressible fluid with a dispersed incompressible component
  • Two-component drift-flux
  • Phase transformations for gas-liquid and liquid-solid
  • Adiabatic bubbles
  • Bubbles with phase change
  • Continuum fluid with discrete particles
  • Scalar transport

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Discrete Particle Models:

  • Massless marker particles
  • Mass particles of variable size/mass
  • Linear and quadratic fluid-dynamic drag
  • Monte-Carlo diffusion
  • Particle-Fluid momentum coupling
  • Coefficient of restitution or sticky particles
  • Point or volumetric particle sources
  • Charged particles
  • Probe particles

Shallow Flow Models:

  • Shallow-water model
  • General topography
  • Wetting and drying
  • Wind shear
  • Ground roughness effects

Chemistry Models:

  • Stiff equation solver for chemical rate equations
  • Stationary or advected species

Automatic Features:

  • Automatic termination based on user-defined criteria
  • Mesh and initial condition generators
  • Time-step control for accuracy and stability
  • Automatic limited compressibility
  • Convergence and relaxation levels determined by FLOW-3D
  • Mentor help to optimize efficiency

Options for Coupling with Other Programs:

  • Geometry input from Stereolithography (STL) files--binary or ASCII
  • Geometry input from ANSYS or I’DEAS tetrahedral data
  • Geometry input from ANSYS or I’DEAS tetrahedral data
  • Direct interfaces with Tecplot®, EnSight®, and FieldView® data 
  • Output for PLOT3D-compatible visualization programs
  • Neutral file output
  • Extensive customization tools
  • Topgraphic data

Data Processing Options:

  • Automatic or custom graph requests
  • Interactive OpenGL-based graphics
  • Color or B/W vector, contour, 3D surface and particle plots
  • Moving history and probe data
  • Force and momentum computations
  • Animation generation
  • PostScript, JPEG and Bitmap output
  • Streamlines
  • STL geometry viewer

Multi-Processor Computing:

  • Shared memory computers
  • Distributed memory clusters
[ پنج‌شنبه 23 اردیبهشت‌ماه سال 1389 ] [ 12:03 ب.ظ ] [ حامد تقی زاده ]
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درباره وبلاگ

کارشناس ارشد مهندسی عمران ____________________________ گرایش سازه های هیدرولیکی دانشگاه تربیت مدرس تهران ____________________________ مهندسین مشاور ترازآب جامع ____________________________ hamed.t.nyu@gmail.com hamed.taghizadeh@yahoo.com
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